Cartridge-fuse.



- in a manner as hereinafter set forth, for

UNITED STATES PATENT onrion; f

WILLIAM enemas eanmrz AND WI LIAM nowrins GARDNER, or menses nocxs;

i PENNSYLVANIA.

'caernmonnosn.

Specification of Letters Patent.

Application filed same 2?, .91s. Serial No. 827,581.

. 1' 0 all whom it may concern. Be it known that we, WILLIAM THoMAsG'ARLITZ and VVILLIAM RowLns GARDNER,

citizens of the United States of America,- residing at McKees Rocks, in.the county of ting up a positive and rapid clamping device for the fuselink. A further object of the invention isto pro vide a cartridge fusewith means as hereinafter set forth, for simultaneously binding the fuselink with the locking of the end cap to the shell of the fuse.

A further object of the invention is to provide a refillable cartridgefuse with means,

centering, the fuse link quickly with respect to the shell and caps whenrefilling the fuse.

i l-further object of the invention is to provide a refillable cartridgefuse, ina manner as hereinafterreferred to, overcoming the inconvenienceof contending with looseparts when-the fuse link is removed and a. newone'substituted, thus elimini'ting any possibility of losing ormisplacing any of the elements of the fuse during the act of refilling.

A further object of'the invention is to pro videa refillable cartridgefuse, with means I in a manner as hereinafter set forth, for locking thecap firmly to the shell and to further permitof thequick removal of thecap when desired.

A furtherobject ofthe invention is to pro'- vide a cartridge fuse, withmeans in a mannerv as hereinafter set forth, for ventilating the-shellwhen occasion so requires.

' A further object of the invention is to provide arefillablecartridgefuse including a pair of caps carrying means forclamping the fuse link in position, the said means beingperinanentlycarried by the caps when these latter are connectedto orremoved frmn the shell, and the said means further constitute locks forsecuring the caps to the ends of the shell.

A further object of the invention is to provide a'cartridge fuse, withmeans for permanently holding the fuse link in position for PatentedApr. 13, 1915. l

the purpose of forming a perfect electric I contact irrespective of thecontraction or ex pansion of the shell.

A further object of the invention is to pro- .vide a cartridge fuse,withmeans to overcome the causing of loose contact'between the fuse linkand caps due to the shrinking" of the shell. 4

Further objects'of the invention are to provide a quick refillablecartridge fuse,

whichis simple in-its construction and ar-f rangcinent, strong, durable,eihcicnt and con veniont in its use,- readily set up, and inexpensive tomanufacture. i

With the foregoing and other objects" in view, the invention consists ofthe novel construction, combination and arrangenient of' parts ashereinafter more specifically de scribed andillustrated in theaccompanying drawings, wherein is shown an embodiment of the invention,but it is to be understood thatchanges, variations and modifications canhe resorted to which come within the I scope of the cla ms hereuntoappended.

in the drawings, wherein like reference characters denote corresponding.parts throughout the several views: Figure 1 is a longitudinal sectionalview of a cartridge,

fuse in accordance with this invention, Fig. "2 IS a bottom plan partlybroken away and partly in section, Fig. 3 is a perspective view brokenaway, illustrating one .end of the shell, and Fig. 4 is a transversesectional view through one of the end caps.

Referring to the drawings in detail, 5

denotes a cylindrical shellformed of insu=v 1 lat-ion, preferably fiber,and said shell 5 near one end is provided with acircular opening 6, andprojecting from each opening 6 and terminating at an end edge is a iongitudinally extending slot 70f a width less than the diameter of itsrespective opening.

latter extend in opposite directions with re spect to each other.

.Mounted upon each end of the shell is a The openings 6 are arranged inlongitudinal aliuen'ient, as Well as the slot 7, but these 7 one will bedescribed, as the description of i one applies to the other. Each capconsists periphery of the shell 5, and when in such position, one end ofsaid shell 5 abuts against A the inner face of the body portion 8. The

inner face of the body portion 8 is'recessed as at 11, to provide a seatfor a purpose to be presently referred to. The body portion 8 isfurthermore provided with one or more openings 12, for thepurpo'seofventilating the shell 5, for example allowing of the escape of any gaseswhich are generated within the shell 5. The rim 10 is provided with anopening 13, and is furthermore pro vided diametrically opposite theopening 13, with an opening 14, the latter having its wall screwthreaded. The opening 13 is of greater diameter than the opening 14 andthe purposes for which the said openings 13 and 14 are intended willbepresently referred to. and projecting inwardly therefrom is a guidemember which consists of a body portion 15 having one end formed with aright angular-1y disposed flange 17, which is positioncd against theseat 11 and secured to the body portion 8 of the cap through the mediumof a holdfast device 18, the latter being illustrated as a screw andwhich has its head countersunk in the outer face of the body portion 8.The body portion 15 of the guide member has its other end formed with anupwardly projecting curved lip 19. The body portion 15 is formed withacentrally disposed opening 520 having the wall thereof threaded and thefunction of said opening 20 will be presently referred to.

Associated with the guide member 15' for the purpose of clamping one endof a fuse link 21 in position is a washer or supporting member 22, whichopposes the guide member 15, and which is carried by a transverselyextending clamping screw, the latter 1n con nection with thethreadedopenings 14 and 20 not only clamps one end of the fuse link 21 to theguide member 15, but also locks the cap'to the shell'5. The clampingscrew includes a head 23 and a shank formed of two lengths of differentdiameters, that length of larger diameter is indicated at'24 andthatlength of smaller diameter at 25. The length of larger diameter isformedvintegi'al with the head 23 and is of less diameter than said head23, but of such diameter as to permit the passage of such length throughthe slot 7. The length 2 L of the shank'of the clamping screw is plane,while the length 25 is peripherally threaded from end 'to end. At thepoint of mergence of thelength 25 and the length 24 of tle shank of theclamping screw; a shoulder 2 y is promounted upon the ends of the shell5.

Carried by the body portion 8,

vided upori which is mounted the washer or supporting member 22constituting a fuse clamp. The washer 22 loosely surrounds the length 25of the shank. The shell 5 is provided with openings 27, which registerwith the openings 14, when the caps are The fuse link 21, has each endenlarged as at 28,

and which is bifurcated as at 29, to enable 'the said ends to beextended between the members 19 and 22, as the bifurcated ends 29provide clearances for the lengths 25 of the clamping screws when thefuse link-is positioned through the medium of the' clamping screws tothe caper I When, the

clamping screws are in position to secure theclamping screws,washers,end guide members are carried with the caps, or in other words,it is not necessary to disconnect the clamping screws, washers or guidemembers from the caps when these latter are detached from the shell, andby such an arrangement, there is no possibility of losing'or misplacingany of the elements referred to.-

fuse link 21 to the caps, the heads 23 extend The members 19 areemployed for quickly guiding or positioning the ends of the fuse linkwith respect to the washers 22 and clamping screws 25, and said membersquickly center the fuse link longitudinally of the casing. As theconnecting of the fuse link 21 longitudinally of the shell 5 is haddirectly with the cap, it is obvious that it will always remain inposition irrespective of the shrinkage or expansion of the shell.

To remove a cap, a clamping screw is detached from engagement withthethreads of the wall of an opening 14, and shifted clear of an opening27, such movement on the part of the clamping screw will position thehead 23 clear of the opening 6, under such conditions the length 2% ofthe shank of the clamping screw can be passed outwardly through the slot7, undersuch conditions the cap is, then detached from the shell. Whenthe cap is detached from the shell, the clamping sci'ew,iwashc r andguide member are carriedwith the cap as these elements are permanentlyconnected to the cap, Theopenings '27 are of greater diameter' than thethreaded.lengths 25 of the clamping screws and the openings 6 are ofgreater diameter than the heads 23 of the clamping screws, and by 'suchan arrangement contraction and expansion of the shell 5 is provided for.By providing the openings 6 of greater diameter than the heads 23and'the openings 27 of greater diameter than the caps mounted uponthe-ends thereof, guide threaded lengths 25 of theshanks of-the clampingscrews, a slight movement of the caps can be had so that the extensionsor blades 9 wil'l adjust themselves when placing them in engagement withthe clips on the fuse blocks, and under such conditions making thebla'des '9 what may be termed self alining. I I

What we claim is I 1. A' cartridge fuse comprising a shell,

members carried by the caps and projecting into the shell, transverselyextending shoul= ings to the termini of the shells, caps mount- 7 ed'onthe ends of the shell and having open ings registering with the openingsof the shell, transversely-extending shiftable elements provided withhead's;- the heads of said elements seated in the registering openings,one of which communicates with the slot and further'exten'ding throughthe shell and engaging in the other'of said registering openings wherebythe caps are connected to the shell, and, means engaged by said headedelements for electrically connecting the ends of a fuse with said caps,said slots being of a diameter substantially equal to 'the diameter ofthe transversely-shiftable elements and providing for the removal ofsaid caps from said shell without disconnecting said headed elementsfrom 'said means when said heads are shifted exteriorly of the caps andfree of the openings.

A cartridge fuse comprising a shell, 2.

cap mounted" on one end thereof, a guide member carried by the cap, atransverse clamping screw engaging in the cap at two points andextending entirely through the shell for connecting the cap thereto,said screw having a shoulder, a fuse clamping member having'said screwextending therethiough and capable of being shifted by said shoulder forclamping the end of a fuse to said member, said screw extending throughthe latter, andmeans for clamping the other end of the fuse to the otherend of the shell. f

4%. A cartridge fuse comprising ashell, a cap mounted on one endthereof, a member carried by the cap, a transverse clamping elementengaging in the cap at two points and extending entirely through theshell for connecting the capthereto, said element having a shoulder, afuse clamp having said element extending therethrough and capableof-being shifted by said shoulder for clamping the end of a fuse to saidmember, said element extending through the latter, and means forclamping the other end of the fuse to the other end of the shell.

5. A cartridge fuse comprising a shell, a cap mounted on each endthereof and carrying an inwardly extending guide member a. clampingmember associated with said guide member, a transverse element forsupporting said clamping member, said transverse element havmgthreadedengagement with said guide member and further engaging With saidclamping member for clamping one end of a fuse to the cap, saidtransverse element extending completely through the cap and shell, andmeans for other end of the shell.

6. A cartridge fuse comprising a shell, a

cap mounted on one end thereof, a guide member carried by the cap, atransverse headed clamping element extending through and engaging withsaid guide member, a fuse clamp associated with said guide memher andbodily carried by said clamping ele ment, and said element having meansspaced from the head thereof adapted for engaging with said clamp forshifting it to clamp one end of a fuse to said guide member, and

means for clamping'the other end of the fuse to the other end of theshell.

clamping the other end of the fuse to-the 7'. A cartridge fusecomprising a shell, 21

cap mounted on each end of the shell, guide members carried by the caps,said'shell and caps having diametrically-disposed registering openings,one of the shell openings at each end thereof communicating with a. slotthat opens at the endof the shell and which v slot is of less diameterthan said opening, a

headed element extending transversely of said shell ends with the headthereoffreceived in said slotted opening, clamping members supported onsaid headed elementsfithe opposite end of each transversely-extendingelement passing through the guide member and clamp and threaded into theshell and cap to prevent Withdrawal of the cap, each of said elementsadapted'to be shifted axially to remote the head thereof from saidopening and to permit the opposite end to clear the inner surface of theshell, where by the cap may be moved outwardly with thetransversely-extending element passing through the slot; 8. A cartridgefuse comprising a shell,

caps having diametrically disposed openings therein mounted on the endsthereof, each end of the shell having diametrically-disposed openingsadapted to register with the openings in the caps, one of which openingssee? AVAILABLE. COPY at each end eommfihieates with a slot of reduceddiameter opening at the ends of, the shell, a headed screw.v memberextending transversely of said shell ends and received 5 in saidopeningswith the head thereof disposed in the opening communicating with theslot, awfuse supported at each end on said screw members, means carriedby the caps through which the screws extend, and means 10 controlledbysaid screws adaptedtopositively engage the fuseends, said screw headadapted to be removed from said opening with the opposite end clear ofthe inner surface of the shell to permit the caps end v serewsto beremoved from the shell.

In testimony whereof We afiix our signetnres in the presence of twoWitnesses WILLIAM THOMAS GARLITZ;

WILLIAM ROWLES GARDNER. v i

I Witnesses NICHOLAS L. BOGAN, MAX SROLOVITZ.

